With 'Schlaglos Schlagfertig', practitioners in child and youth work, social educators, social workers, psychologists, educators, and police are provided with a book that presents successful approaches for dealing with aggressive and violent adolescents. The two training programs, 'Stay Cool' and 'Anti-Aggression Training', are based on the educational principle: "We respect and accept you, but regarding your act of violence, you are a real jerk, and we will firmly combat that side of you." We owe our dedicated commitment to a life without violence to both the perpetrators and the victims.